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path: root/drivers/dma/dmaengine.c
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Diffstat (limited to 'drivers/dma/dmaengine.c')
-rw-r--r--drivers/dma/dmaengine.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 5829143558e1..15278044295c 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -166,8 +166,8 @@ static struct dma_chan *dma_client_chan_alloc(struct dma_client *client)
}
/**
- * dma_client_chan_free - release a DMA channel
- * @chan: &dma_chan
+ * dma_chan_cleanup - release a DMA channel's resources
+ * @kref: kernel reference structure that contains the DMA channel device
*/
void dma_chan_cleanup(struct kref *kref)
{
@@ -199,7 +199,7 @@ static void dma_client_chan_free(struct dma_chan *chan)
* dma_chans_rebalance - reallocate channels to clients
*
* When the number of DMA channel in the system changes,
- * channels need to be rebalanced among clients
+ * channels need to be rebalanced among clients.
*/
static void dma_chans_rebalance(void)
{
@@ -264,7 +264,7 @@ struct dma_client *dma_async_client_register(dma_event_callback event_callback)
/**
* dma_async_client_unregister - unregister a client and free the &dma_client
- * @client:
+ * @client: &dma_client to free
*
* Force frees any allocated DMA channels, frees the &dma_client memory
*/
@@ -306,7 +306,7 @@ void dma_async_client_chan_request(struct dma_client *client,
}
/**
- * dma_async_device_register -
+ * dma_async_device_register - registers DMA devices found
* @device: &dma_device
*/
int dma_async_device_register(struct dma_device *device)
@@ -348,8 +348,8 @@ int dma_async_device_register(struct dma_device *device)
}
/**
- * dma_async_device_unregister -
- * @device: &dma_device
+ * dma_async_device_cleanup - function called when all references are released
+ * @kref: kernel reference object
*/
static void dma_async_device_cleanup(struct kref *kref)
{
@@ -359,7 +359,11 @@ static void dma_async_device_cleanup(struct kref *kref)
complete(&device->done);
}
-void dma_async_device_unregister(struct dma_device* device)
+/**
+ * dma_async_device_unregister - unregisters DMA devices
+ * @device: &dma_device
+ */
+void dma_async_device_unregister(struct dma_device *device)
{
struct dma_chan *chan;
unsigned long flags;